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- W2008522959 startingPage "A643" @default.
- W2008522959 abstract "The hyperfine relaxation of a population difference, produced by optical pumping, between the $F=1$ ${m}_{F}=0$ and $F=2$ ${m}_{F}=0$ energy levels of the ground state of ${mathrm{Rb}}^{87}$, has been studied in cells containing neon, argon, helium, or krypton as a buffer gas. The relaxation times ${T}_{1}$ and ${T}_{2}$ have been measured as a function of the rubidium vapor pressure in the cell. The relaxation rate due to spin exchange in ${mathrm{Rb}}^{87}$-${mathrm{Rb}}^{87}$ collisions has been found equal to 65 ${mathrm{sec}}^{ensuremath{-}1}$ at 44ifmmode^circelsetextdegreefi{}C, and the diffusion coefficients of ${mathrm{Rb}}^{87}$ atoms in He, Ne, and Ar evaluated as 0.6, 0.31, and 0.22 ${mathrm{cm}}^{2}$ ${mathrm{sec}}^{ensuremath{-}1}$, respectively. The cross section for ${mathrm{Rb}}^{87}$-Ne and ${mathrm{Rb}}^{87}$-Ar collisions are found to be 1.6ifmmodetimeselsetexttimesfi{}${10}^{ensuremath{-}22}$ ${mathrm{cm}}^{2}$ and 9ifmmodetimeselsetexttimesfi{}${10}^{ensuremath{-}22}$ ${mathrm{cm}}^{2}$. These values are in general agreement with values previously obtained by other methods. The extrapolated values of $frac{1}{{T}_{2}}$ for zero vapor pressure of rubidium are 185, 237, and 318 ${mathrm{sec}}^{ensuremath{-}1}$ for Ne, He, or Ar, respectively. Relaxations by the pumping light or by the magnetic field inhomogeneities are also discussed." @default.
- W2008522959 created "2016-06-24" @default.
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- W2008522959 date "1964-11-02" @default.
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- W2008522959 title "Hyperfine Relaxation of Optically Pumped<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=normal>Rb</mml:mi></mml:mrow><mml:mrow><mml:mn>87</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Atoms in Buffer Gases" @default.
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- W2008522959 doi "https://doi.org/10.1103/physrev.136.a643" @default.
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